Masterpiece Tahoe Cotton Canvas Shapes are vailable in Half Round, Hexagon, and Triangle styles, this stretched canvas are a departure from traditional squares and rectangular canvas. Heavy 10 oz, 100% cotton canvas is sized and triple-primed with archival-quality acrylic gesso for a primed weight of 14.6 oz. The acid-free, archival surface is great for work in oils or acrylics. It has a medium tooth and texture. Canvas is stretched drum-tight on a 3/4″ deep solid MDF frame with a 1/4″ relief to prevent frame impressions from marring the surface.